ENZYMES AND EVOLUTION

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"Medicose Academy is sharing its Test 4 on Enzymes and Evolution for the MDCAT 2025 session." join our WhatsApp channel also for more updates about test session.CLICK HERE TO JOIN WHATSAPP CHANNEL

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The receptors for both taste and smell are:

1 point

Osmoreceptors

Chemoreceptors

Thermoreceptors

Mechanoreceptors

Clear selection

The reaction will proceed faster if the activation energy is?

1 point

High

Low

Remains same

None of these

Clear selection

The energy required to start a reaction is called?

1 point

Startup energy

Initial energy

Point energy

Activation energy

Clear selection

An enzyme which requires a biological change in order to become active is called?

1 point

Transferase

Zymogen

Hydrogenase

Trypsin

Clear selection

An enzyme without its cofactor is called:

1 point

Coenzyme

Apoenzyme

Holoenzyme

Proenzyme

Clear selection

If the non-protein part of enzyme is covalently bonded to the enzyme it is known as?

1 point

Coenzyme

Activator

Cofactor

Prosthetic group

Clear selection

Small organic, non-protein part that helps in enzyme reactions:

1 point

Co-factor

Catalyst

Activator

Prosthetic group

Clear selection

An activated enzyme made up of a polypeptide with its cofactor is:

1 point

Substrate

Holoenzyme

Coenzyme

Apoenzyme

Clear selection

Nicotinamide adenine dinucleotide is an example of:

1 point

Coenzyme

Holoenzyme

Cofactor

Apoenzyme

Clear selection

Co-enzyme require:

1 point

Vitamins

Proteins

Fats

Carbohydrate

Clear selection

All enzymes are:

1 point

Globular proteins

Fibrous proteins

Glycoproteins

Lipoproteins

Clear selection

What does the active site of the enzyme determine?

1 point

Looks like a lump projection from the surface of an enzyme

Forms no chemical bond with substrate

Never changes

Determines by its structure the specificity of an enzyme

Clear selection

Enzymes showing substrate specificity are specific to how many substrates?

1 point

Clear selection

Which term is used to refer to an inactive enzyme precursor?

1 point

Apoenzyme

Null enzyme

Zymogen

Inhibitor

Clear selection

Catalysts that increase the rate of biological chemical reaction are called:

1 point

Proteins

Vitamins

Enzymes

Minerals

Clear selection

Which of the following best describes a coenzyme?

1 point

Covalently bonded non-protein part of an enzyme

Cofactor consists of metal ions

Loosely bonded non-protein part of an enzyme

Both A and B

Clear selection

Which statement about enzyme is incorrect?

1 point

Some of them consist solely of protein with no non protein part

They catalyze a chemical reaction without being utilized

They without their cofactor are called apoenzyme

All enzymes are fibrous proteins

Clear selection

Active form of an enzyme:

1 point

Coenzyme

Apoenzyme

Holoenzyme

Proenzyme

Clear selection

A cofactor made of inorganic ion which is detachable is called?

1 point

Prosthetic group

Coenzyme

Activator

Cofactor

Clear selection

Enzymes are globular proteins because:

1 point

They have a primary structure

They have a secondary structure

They have a tertiary structure

All of the above

Clear selection

A small organic, non-protein molecule that carries chemical groups between enzymes is:

1 point

Cofactor

Catalyst

Substrate

Coenzyme

Clear selection

Biological molecules which catalyze a biochemical reaction and remain unchanged after completion of reaction are called?

1 point

Cofactor

Coenzymes

Activator

Enzymes

Clear selection

Enzymes bind with chemical reactant known as:

1 point

Product

Reactant

Substrate

All of these

Clear selection

If the non-protein part of enzyme is covalently bonded to the enzyme it is known as?

1 point

Coenzyme

Prosthetic group

Cofactor

Activator

Clear selection

Enzyme reacts with substrate to form:

1 point

Product

Active site

Binding site

Catalytic site

Clear selection

Enzymes are in nature:

1 point

Carbohydrates

Lipids

Nucleic acids

Proteins

Clear selection

Which type of bond are never formed when substrate fits into active site of enzyme?

1 point

Hydrogen bonds

Ionic interactions

Covalent linkages

Hydrophobic interactions

Clear selection

The mechanism of enzyme activation is referred to as:

1 point

Activation energy

Catalysis

Enzyme specificity

Denaturation

Clear selection

The specificity of enzyme structure depends upon:

1 point

Active site

Allosteric site

Globe shape

All of these

Clear selection

Catalytic activity takes place at:

1 point

Active site

Allosteric site

Regulatory site

All of these

Clear selection

Which statement about active site is not true?

1 point

Active site is of spherical shape

Active site is nonspecific

Active site contains few amino acids

Active site converts substrate into product

Clear selection

Type of bond present between enzyme and prosthetic group:

1 point

Hydrogen

Covalent

Ionic

Coordinate covalent

Clear selection

Which one forms the raw material for coenzymes?

1 point

Vitamins

Carbohydrates

Lipids

Proteins

Clear selection

The lock and key model of enzyme action was proposed by:

1 point

Louis Pasteur

Emil Fischer

Daniel Koshland

Urey Miller

Clear selection

The complex that forms when a substrate binds to enzyme is called:

1 point

Enzyme-substrate complex

Enzyme complex

Substrate complex

Structural complex

Clear selection

Enzymes do not affect:

1 point

Substrate concentration

Product concentration

Both A and B

None

Clear selection

Who proposed lock and key model of enzyme activity?

1 point

Emil Fischer

Daniel Koshland

Fredrick Sanger

James Watson

Clear selection

In the lock and key model of enzyme activity, the substrate acts as the:

1 point

Key

Lock

Both A and B

None of the above

Clear selection

Enzymes work by which of the following?

1 point

Increasing the activation energy

Reducing the activation energy

Making exergonic reactions endergonic

Making endergonic reactions exergonic

Clear selection

How many models are present for enzyme-substrate complex or reaction?

1 point

Clear selection

Which statement is incorrect about Lock and Key Model?

1 point

Specific enzyme can transform only a specific substrate

Active site of an enzyme is a non-flexible structure

Active site does not change before during or even after the reaction

It explains the mechanism of every chemical reaction

Clear selection

Which types of bond are never formed when a substrate fits into the active site of an enzyme?

1 point

Hydrogen bonds

Ionic interactions

Hydrophobic interactions

Covalent linkages

Clear selection

Koshland in 1959 proposed the modified form of which of the following?

1 point

Unit membrane model

Fluid mosaic model

Reflective index model

Induced fit model

Clear selection

Induced fit model was introduced by Koshland in which of the following year?

1 point

1960

1961

1959

1966

Clear selection

Lock and key model was proposed by:

1 point

Koshland

Fischer

Krebs

Darwin

Clear selection

Which of the following is false about concerning enzymes?

1 point

Substrates must bind the enzyme's active site in order to initiate its effects

Enzymes increase both the forward rate and reverse rate of a reaction

Enzymes are not destroyed in a reaction and can be used in the same reaction countless times

Enzymes increase the amount of product created in a reaction

Clear selection

Number of substrate molecules converted into product by one molecule of enzyme active site per unit time is called?

1 point

Turnover number

Substrate number

Reaction number

None

Clear selection

According to the induced fit model, what happens when an enzyme-substrate complex is formed?

1 point

The contact between the substrate and the enzyme causes a change in the shape of the active site

The shape of the substrate and the shape of the active site is complementary to each other

The substrate fits into the active site and forms bonds with the amino acids at the active site

All of these

Clear selection

What affect do enzymes have on the activation energy of a reaction?

1 point

Increases

Decreases

No affect

Increases or decreases depending upon individual enzyme

Clear selection

While bound to the active site, the substrate is converted into which of the following?

1 point

Complex

Substrate of high energy

Product of reaction

Both A and B

Clear selection

The primary function of cofactors is to?

1 point

Assist in enzyme synthesis

Assist in enzyme inhibition

Assist in enzyme activity

Both a and b

Clear selection

In enzyme catalytic reaction the substrate is first converted to a high energy state called?

1 point

Transition state

High energy state

Activation state

Breaking point

Clear selection

Allosteric enzymes consist of multiple:

1 point

Inhibitors

Polypeptide chains

Active sites

Temperature ranges

Clear selection

Functions of enzymes include all of the following except:

1 point

Lessening the time required for a reaction to take place

Shifting substrates into more favorable positions in the active site

Decreasing the activation energy of a reaction

Shifting the equilibrium of a reaction

Clear selection

Upon increasing the temperature the shape of enzyme's active site?

1 point

Remains same

Changes

Adopts a geometric conformation

Denatures

Clear selection

The optimum pH for enzyme arginase is which of the following?

1 point

9.3

9.7

Clear selection

The optimum pH for the functioning of the enzyme pepsin is?

1 point

Clear selection

If we add more substrate to already occurring enzymatic reaction and it has no effect on the rate reaction, the process is called?

1 point

Denaturing

Saturation

Composition

Inhibition

Clear selection

pH of salivary amylase is:

1 point

6.8

7.60

2.00

5.50

Clear selection

It works in acidic medium:

1 point

Arginase

Pancreatic lipase

Catalase

Enterokinase

Clear selection

Extreme change in pH results in which of the following?

1 point

Change in ionization of amino acids at the active site of the enzyme

Change in the ionization of the substrate

Increase in the reaction rate

Denaturation of the enzyme

Clear selection

What is meant by optimum temperature of an enzyme?

1 point

The temperature at which the primary structure of an enzyme remains intact

The temperature at which an enzyme makes the maximum amount of product

The temperature at which an enzyme may be more affected by an inhibitor

The temperature at which an enzyme makes the least amount of product

Clear selection

Which of the following strategies of enzymatic inhibition is used by noncompetitive inhibitors?

1 point

Bind to substrate so that it cannot bind to the active site

Target the enzyme for destruction using a protease

Bind to the active site and prevent substrate from binding

Bind to an allosteric site to cause a conformational shift in the enzyme

Clear selection

If more substrate to an already occurring enzymatic reaction is added more enzyme activity is seen because?

1 point

There is probably more substrate present than there is enzyme

There is probably more product present than either substrate or enzyme

The enzyme substrate complex is probably failing to from during the reaction

There is probably more enzyme available than there is substrate

Clear selection

The optimum pH for the functioning of pancreatic lipase is?

1 point

Clear selection

A researcher has designed a new type of inhibitor that binds at the active site of an enzyme. What type of inhibition does this molecule display?

1 point

Uncompetitive inhibition

Competitive inhibition

Noncompetitive inhibition

All of these

Clear selection

Which of the following changes could lead to loss of enzymatic function?

1 point

Decrease in activation energy of the reaction

Increase in enzyme concentration

Change in overall enthalpy of the reaction

Increase in pH of the reaction

Clear selection

Which statement correctly describes why enzyme activity increases with increased enzyme concentration?

1 point

Collisions between enzyme and substrate molecules increase because of increased kinetic energy

Collisions between enzyme and substrate molecules increase because of increased heat energy

Collisions between enzyme and substrate molecules increase because of more active sites are available

Collisions between enzyme and substrate molecules increase because more substrate molecules are available

Clear selection

The rate of reaction of enzyme directly depends upon which of the following?

1 point

Low temperature

Amount of enzyme present at a specific time at unlimited substrate concentration

Maximum pH level

Nature of substrate

Clear selection

The enzyme-substrate complex is formed in which part of the enzyme molecule?

1 point

Binding site

Allosteric site

Catalytic site

None of the above

Clear selection

Which step, causes activation of catalytic site of an enzyme?

1 point

Change in pH of the surroundings

Change in the charge of the active site

Change in temperature

Formation of enzyme substrate site

Clear selection

If the concentration of enzyme is kept constant and amount of substrate is increased a point is reached where increase in substrates concentration does not affect the reaction rate because of?

1 point

Enzymes get denatured at higher substrate cone

Rate of reaction is indirectly proportional to substrate concentration at this point

All the active sites on enzyme molecule are occupied

All of these

Clear selection

What is the optimum temperature for working of enzymes in human body?

1 point

32°C

40°C

37°C

35°C

Clear selection

The end product of an enzymatic reaction inhibits formation of product in an earlier step. This type of enzymatic regulation is known as?

1 point

Allosteric regulation

Negative regulation

Metabolic pathway loop

Feedback inhibition

Clear selection

In uncompetitive inhibition, the inhibitor binds with:

1 point

Enzyme

Substrate

ES-complex

All of these

Clear selection

In mixed inhibition, the allosteric affects:

1 point

Shape of substrate

Shape of inhibitor

Shape of enzyme

None of these

Clear selection

The non-substrate molecules that bind to the allosteric sites are called?

1 point

Inhibitors

Reactants

Allosteric substrates

Allosteric modulators

Clear selection

A chemical substance which can react (in place of substrate) with the enzyme but is not transformed into product/s and thus blocks the active site temporarily or permanently is called?

1 point

Coenzyme

Blocker

Inhibitor

Cofactor

Clear selection

Malonic acid is an example of which type of inhibitors?

1 point

Reversible inhibitor

Non-competitive inhibitor

Competitive inhibitor

Malonic acid is an example of which type of inhibitors?

Clear selection

In non-competitive inhibition, the quantity which remains same as the reaction proceed is?

1 point

Vmax

Clear selection

A substance which binds at the active site of the enzyme but does not result in the formation of the products is called:

1 point

Irreversible inhibitor

Reversible inhibitor

Non-competitive inhibitor

Competitive inhibitor

Clear selection

An inhibitor is added, disrupting the function of a particular enzyme. The experimenter adds more substrate, and enzyme function increases again. These results indicate the involvement of what type of inhibitor?

1 point

Non-competitive

Uncompetitive

Allosteric

Competitive

Clear selection

What is meant by enzyme denaturation?

1 point

Peptide bonds between amino acid residues are broken

The enzyme loses its secondary structure

The enzyme loses its tertiary structure

All of the above

Clear selection

The effect of competitive inhibitor on enzyme activity is such that it affects which of the following?

1 point

Increases enzyme activity

Doesn't change enzyme activity

Decreases enzyme activity

None of these

Clear selection

The non-substrate molecules that binds to the allosteric sites are called?

1 point

Inhibitors

Reactants

Allosteric substrates

Allosteric modulators

Clear selection

Which of the following best describes competitive inhibitors?

1 point

Do occupy active site

Destroy the structure of enzyme

Resemble structurally with substrate

None of the above

Clear selection

Which of the following is a competitive inhibitor of succinic dehydrogenase?

1 point

Malonic acid

Malic acid

Fumaric acid

Acetic acid

Clear selection

In competitive inhibition, a thing that binds to enzyme active site are?

1 point

Substrate

Catalyst

Inhibitors

Both A and B

Clear selection

Feedback inhibition in most metabolic pathways involves which type of enzymes?

1 point

Holoenzymes

Allosteric enzymes

Coenzymes

Apoenzyme

Clear selection

These form weak linkages with enzymes:

1 point

Irreversible inhibitors

Reversible inhibitors

Both A and B

None

Clear selection

In uncompetitive inhibition, the inhibitor binds with:

1 point

Enzyme

Substrate

ES-complex

All of these

Clear selection

An allosteric enzyme will have:

1 point

Many active sites

Many substrates

Many binding sites

No binding site

Clear selection

In mixed inhibition, the inhibitor binds to:

1 point

Allosteric site

Active site

Binds to substrate

Does not bind to enzyme

Clear selection

Competitive inhibitors enzyme activity.

1 point

Decrease

Increase

Does not affect

None

Clear selection

Structure of enzyme is altered by:

1 point

Competitive inhibitor

Non-competitive inhibitor

Irreversible inhibitor

Reversible inhibitor

Clear selection

In competitive inhibition, two things attached to enzyme’s active site are:

1 point

Inhibitor

Substrate

Both A and B

None of these

Clear selection

The structure of an enzyme is altered by which of the following inhibitors?

1 point

Reversible inhibitor

Competitive inhibitor

Non-competitive inhibitor

Irreversible inhibitor

Clear selection

This enzyme is used to cut DNA molecule in rDNA technology

1 point

Ligase

Phosphatase

Ribonuclease

Restriction enzyme

Clear selection

Restriction endonucleases found in

1 point

Viruses

Bacteria

Eukaryotes

All of these

Clear selection

Antibodies can be digested by using which of the following types of enzymes?

1 point

Lipase

Protease

Amylase

Polymerase

Clear selection

Ligases help in which of the following reactions?

1 point

Splitting of two molecules

Oxidation of molecules

Joining of molecules

Both A and B

Clear selection

What type of enzymes is involved in biological oxidation?

1 point

Kinases

Dehydrogenases

Polymerases

Phosphatases

Clear selection

Which of the following is not a class of enzyme?

1 point

Ligase

Isomerase

Hydrolase

Pyrimidine complex

Clear selection

Enzymes which are involved in transfer of electrons are known as:

1 point

Oxidases

Dehydrogenase

Hydrolyses

Both A and B

Clear selection

The following enzymes are regulated by calcium ions:

1 point

DNA polymerase

Nitric oxide synthetase

Adenylate cyclase

Phosphoprotein phosphatase

Clear selection

Enzyme which helps in changing the shape of molecule is called:

1 point

Ligases

Dehydrogenases

Hydrolyses

Isomerases

Clear selection

Phosphoglyceromutases are example of:

1 point

Lyases

Hydrolases

Ligases

Transferases

Clear selection

The process that has transformed life on earth from its earliest forms to vast diversity is?

1 point

Mutation

Evolution

Migration

Genetic drift

Clear selection

Concept of evolution was first presented by which of the following scientists?

1 point

Lamarck

Aristotle

Wallace

Darwin

Clear selection

Earliest life form on earth is:

1 point

Virion

Viroid

Prion

None

Clear selection

During Aristotle time, it was thought that:

1 point

Organisms ranged from simple to complex

One type of organism give rise to another type of organism

Both A and B

All living things specially created by nature

Clear selection

Methanopyrus kandleri is an organism which lives in a hydrogen-carbon dioxide environment, and was first discovered in a hydrothermal vent where temperatures reached 230°F. What sort of organism is this?

1 point

Protist

Cyanobacteria

Archaea

Bacteria

Clear selection

Flagella might have arisen through the ingestion of which of the following?

1 point

Cyanobacteria

Chlamydomonas

Paramecium

Spirochetes

Clear selection

Carolus Linnaeus was believer of which of the following?

1 point

Special creation

Catastrophism

Natural selection

Inheritance of acquired characters

Clear selection

Which of the following is not an example of evidence supporting the endosymbiotic theory?

1 point

Mitochondria and other plastids multiply by binary fission

Mitochondria contain their own DNA, which is a single circular chromosome

Mitochondria have their own ribosomes, which are 70s

None of these

Clear selection

Two populations of the same species over time grow distant from one another. At what point will these two populations be considered different species?

1 point

When the populations begin to eat different foods

When there is a physical barrier, such as a river

When the two populations have not been in contact with one another for two hundred years

When they are no longer able to interbreed

Clear selection

Which scientist does not match his achievements in the following options?

1 point

Lamarck published his theory of evolution

Lyell published principles of geology

Malthus published essay on principle of population

Cuvier published papers on inheritance

Clear selection

The process by which different kinds of living organism are believed to have developed from earlier forms during the history of the earth:

1 point

Evolution

Development

Growth

None of the above

Clear selection

He explained earth’s history by catastrophism:

1 point

Cuvier

Lyell

Malthus

Lamarck

Clear selection

Eukaryotes evolved by prokaryotes through:

1 point

Commensalism

Symbiosis

Predation

All of the above

Clear selection

Who wrote an essay on population?

1 point

Malthus

Darwin

Mendel

Wallace

Clear selection

Lamarck was in-charge of the Natural History Museum in:

1 point

North America

Paris

England

Wales

Clear selection

Which condition can be explained by Lamarckism?

1 point

How giraffes got their long neck

How humans lost their tail

How humans became bipedal

All of these

Clear selection

Which of the following scientists hypothesized that organisms can pass down acquired traits during their lifetimes?

1 point

Lamarck

Linnaeus

Darwin

Mendel

Clear selection

Lamarck’s ideas on biological evolution contained correct and incorrect notions. Which of his ideas is correct?

1 point

Acquired traits can be passed on to offspring

Living forms become perfect with time

Nervous fluids are passed on from generation to generation

Evolution is related to changes in adaptation to the environment

Clear selection

The idea of inheritance of acquired characteristics was given by:

1 point

Lamarck

Darwin

Aristotle

Lyell

Clear selection

What are parts of Lamarck’s theory of evolution?

1 point

Individuals lose traits that they don’t need

Acquired characteristics are heritable

Individuals gain characteristics they need

All of these

Clear selection

Which of the following are important points of Lamarck's theory?

1 point

Use and disuse of organs

Inheritance of acquired characters

Natural selection

Both A and B

Clear selection

Which scientists gave postulate that giraffes have long necks because they wanted to eat the leaves of tall trees?

1 point

Watson and Crick

Lamarck

Darwin

All of these

Clear selection

Who hypothesized that organisms evolved through inheritance of acquired characters?

1 point

Darwin

Hutton

Malthus

Lamarck

Clear selection

Which of the following can be described by Lamarckism?

1 point

How giraffe got their long neck?

How humans lost their tails?

How humans became bipedal?

All of these

Clear selection

Use and disuse organ theory was proposed by:

1 point

Lamarck

Darwin

Wallace

TH Morgan

Clear selection

Natural selection can amplify or diminish variations that are?

1 point

Heritable

Non heritable

Both a and b

Acquired

Clear selection

Who developed a theory of natural selection essentially identical to Darwin's?

1 point

Hardy-Weinberg

Malthus

Lamarck

Alfred Wallace

Clear selection

Darwin was greatly influenced by:

1 point

Essay on population by Malthus

Lamarck's theory

L-Miller's evidence for origin of life

Mendel's paper on inheritance

Clear selection

Darwin’s theory mainly focuses on:

1 point

Origin of life

How organs extinct

How new species arise

How organisms form

Clear selection

Which theory tells about adaptation:

1 point

Darwin's natural selection

Lamarck's theory

Hardy

Weinberg's principle

Clear selection

Island present near South American cost line:

1 point

Maldives

Madagascar

Galapagos

New Zealand

Clear selection

Darwin returned to great Britain in:

1 point

1831

1855

1836

1841

Clear selection

Natural selection was the silent feature of which statement:

1 point

Lamarck

Darwin

Aristotle

Wallace

Clear selection

Darwin collected how many types of finches?

1 point

Clear selection

Darwin's Theory of evolution by natural selection is based on all of the following postulates except:

1 point

Some individuals are more successful in surviving and reproduction than others

Individuals within a population are variable

The survival and reproduction of individuals is not random

The survival and reproduction of individuals is random

Clear selection

Darwin described his theory of natural selection as which of the following?

1 point

Punctuated equilibrium

Survival of the fittest

Inheritance of acquired characteristics

Descent with modification

Clear selection

Who developed a theory of natural selection essentially identical to Darwin’s?

1 point

Hardy-Weinberg

Malthus

Lamarck

Alfred Wallace

Clear selection

Darwin gave his theory of evolution in:

1 point

1859

1822

1884

1913

Clear selection

Galapagos finches indicated:

1 point

Seasonal migration

Immigration

Allopatric speciation

Parapatric speciation

Clear selection

During which of the following levels of biological organization can natural selection occur?

1 point

Gene

Individual

Group

All

Clear selection

Which of the following would best determine the fitness of an organism?

1 point

The number of offspring produced by the organism.

How much food the organism consumes in its lifetime

How large the organism grows

The number of offspring produced by the organism’s own offspring

Clear selection

Which organism would be considered the most biologically fit?

1 point

Lives 45 years and produces 3 offspring

Lives 70 years and produces no offspring

Lives 27 years and produces 1 offspring

Lives 36 years and produces 6 offspring

Clear selection

The book name in which Darwin published the theory of evolution:

1 point

The origin of species by natural selection

The origin of species

The evolution of species

The evolution of species by means of natural selection

Clear selection

What is the definition of "fitness" in terms of evolution?

1 point

The organism's ability to attain resources while in competition with other organisms of its species

The organism's ability to attract the most mates

The organism's health

The ability of an organism to contribute its genes to future generations

Clear selection

The ability to pass on genes is defined as which of the following?

1 point

Differential reproduction

Fitness

Evolution

Natural selection

Clear selection

Darwin’ theory was based on:

1 point

Mutation

Migration

Natural selection

None of the above

Clear selection

The best definition of natural selection is:

1 point

Survival of the fittest

Most fit individuals adapt to their environment better than less fit individuals

Those who eat better are healthier and live longer are most fit within a population

Preservation of traits leads to increase survival and reproduction

Clear selection

Darwin’s theory can be named as:

1 point

Classical theory

Advanced theory

Neo-Darwinism

Theory of special creation

Clear selection

Specifics of natural selection are:

1 point

Regional and permanent

Local and constant

Regional and temporary

Both A and B

Clear selection

Neo-Darwinism has integrated discoveries and ideas from:

1 point

Genetics

Paleontology

Taxonomy

All of these

Clear selection

Which of the following is not an evidence for evolution?

1 point

Fossil record

Common ancestor organisms

Vestigial structures

None of these

Clear selection

Most of the fossils are found in which of the following?

1 point

Metamorphic rocks

Soil

Volcanic mountains

Sedimentary rocks

Clear selection

Structures that were once functional in the past but no longer serve a purpose due to evolutionary adaptations and physiological changes are referred to as?

1 point

Vestigial

Analogous structures

Homologous structures

None of these

Clear selection

Which type of evolution is represented by analogous organs?

1 point

Divergent evolution

Straight evolution

Zig-zag evolution

Convergent evolution

Clear selection

It is not a vestigial organ in humans:

1 point

Appendix

Coccyx

Both A and B

None of the above

Clear selection

Homologous organs show similarity in:

1 point

Shape

Origin

Function

Size

Clear selection

Which of the following is ancient fossil fuel?

1 point

Fish

Reptile

Bird

Amphibian

Clear selection

Embryo of a turtle, mouse and human show:

1 point

Comparative embryology

Distinct differences

Vestigial organs

Analogous structure

Clear selection

The structures of the front flipper of a whale and the forearm of a wolf have similar bone structure and derive from a common ancestor. This is an example of which of the following?

1 point

Convergent evolution

Analogous structures

Homologous structures

Bottleneck effect

Clear selection

Example of convergent evolution is:

1 point

Forelimbs of man and bat

Wings of birds and insects

Darwin's finches

All

Clear selection

Study of fossils is called:

1 point

Mammalogy

Palaeontology

Herpetology

Ornithology

Clear selection

Which of the following organs serve no apparent purpose?

1 point

Non vestigial organs

Homologous organs

Analogous organs

Vestigial organs

Clear selection

The wings of a bird and the wings of a beetle are considered?

1 point

Taxonomic

Phylogenetic

Homologous

Analogous

Clear selection

Which statement is incorrect?

1 point

Homologous organs are functionally different but structurally alike

Examples of homologous structures are of cat, flipper of whale

Examples of analogous structures are wings of bats, birds and insects

Analogous organs are functionally different but structurally alike

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In humans gill pouches have evolved into which of the following organs?

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Nose

Ear

Pharynx

Eustachian tubes

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